Similar words: characterize, characteristic, attract, contract, distract, abstract, contractor, attraction. Meaning: [prəʊ'trækt /prə-] 
adj. relatively long in duration; tediously protracted.
adj. relatively long in duration; tediously protracted. 91. The chamber profile target function was built with productivity and nip angle as constraint conditions, then the gyratory crusher's chamber profile was designed and its curves were protracted.
More similar words: characterize, characteristic, attract, contract, distract, abstract, contractor, attraction, attractive, expected, selected, unexpected, bacteria, protest, protein, protocol, be connected with, protective, protection, track, trace, fraction, interact, practice, practical, track down, practically, in practice, interaction, practitioner.